Installation

What cable does the set need?

Current is the easy half. On a long run it is the voltage drop that decides the size, and that is the half people miss — so both are worked out here and the bigger answer wins.

Set rating, kVA

Cable run, metres

Full-load current: 174 A
Size by current: 70 mm²
Size by voltage drop: 25 mm²
Drop at this size: 3.3 V (0.8%)

PVC-insulated copper, three-phase, in air at 40°C, 3% drop limit. Buried runs, bunched cables and aluminium all derate. Have your installer confirm before you order.

Cable to order

70 mm²

Set by the current it has to carry.

Four cores for a three-phase run, plus earth. A long run is where drop bites: at 30 m this one loses 3.3 V.

Find this cable